Lock



FIG. 1 is a perspective view of a lock;

FIG. 2 is a front elevation view of the lock illustrated in FIG. 1;

FIG. 3 is a top plan elevation view of the lock illustrated in FIG. 1;

FIG. 4 is a bottom plan elevation view of the lock illustrated in FIG. 1;

FIG. 5 is a side elevation view of the lock illustrated in FIG. 1;

FIG. 6 is another side elevation view of the lock illustrated in FIG. 1; and,

FIG. 7 is a rear elevation view of the lock illustrated in FIG. 1.

The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a lock, as shown and described. 